Merge tag 'spi-v3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "There's a couple of driver fixes here, plus one core fix for the DMA
  mapping which wasn't doing the right thing for vmalloc()ed addresses
  that hadn't been through kmap().  It's fairly rare to use vmalloc()
  with SPI and it's a subset of those users who might fail so it's
  unsurprising that this wasn't noticed sooner"

* tag 'spi-v3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: sirf: fix word width configuration
  spi: Fix mapping from vmalloc-ed buffer to scatter list
  spi: dw: Fix dynamic speed change.

3 files changed, 6 insertions, 10 deletions

diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 72e12bad14b9..d0d5542efc06 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -376,9 +376,6 @@ static void pump_transfers(unsigned long data)
         chip = dws->cur_chip;
         spi = message->spi;
 
-        if (unlikely(!chip->clk_div))
-                chip->clk_div = dws->max_freq / chip->speed_hz;
-
         if (message->state == ERROR_STATE) {
                 message->status = -EIO;
                 goto early_exit;
@@ -419,7 +416,7 @@ static void pump_transfers(unsigned long data)
         if (transfer->speed_hz) {
                 speed = chip->speed_hz;
 
-                if (transfer->speed_hz != speed) {
+                if ((transfer->speed_hz != speed) || (!chip->clk_div)) {
                         speed = transfer->speed_hz;
 
                         /* clk_div doesn't support odd number */
@@ -581,7 +578,6 @@ static int dw_spi_setup(struct spi_device *spi)
                 dev_err(&spi->dev, "No max speed HZ parameter\n");
                 return -EINVAL;
         }
-        chip->speed_hz = spi->max_speed_hz;
 
         chip->tmode = 0; /* Tx & Rx */
         /* Default SPI mode is SCPOL = 0, SCPH = 0 */
diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c
index 39e2c0a55a28..f63de781c729 100644
--- a/drivers/spi/spi-sirf.c
+++ b/drivers/spi/spi-sirf.c
@@ -562,9 +562,9 @@ spi_sirfsoc_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 
         sspi->word_width = DIV_ROUND_UP(bits_per_word, 8);
         txfifo_ctrl = SIRFSOC_SPI_FIFO_THD(SIRFSOC_SPI_FIFO_SIZE / 2) |
-                                           sspi->word_width;
+                                           (sspi->word_width >> 1);
         rxfifo_ctrl = SIRFSOC_SPI_FIFO_THD(SIRFSOC_SPI_FIFO_SIZE / 2) |
-                                           sspi->word_width;
+                                           (sspi->word_width >> 1);
 
         if (!(spi->mode & SPI_CS_HIGH))
                 regval |= SIRFSOC_SPI_CS_IDLE_STAT;
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index ebcb33df2eb2..50f20f243981 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -615,13 +615,13 @@ static int spi_map_buf(struct spi_master *master, struct device *dev,
                                 sg_free_table(sgt);
                                 return -ENOMEM;
                         }
-                        sg_buf = page_address(vm_page) +
-                                ((size_t)buf & ~PAGE_MASK);
+                        sg_set_page(&sgt->sgl[i], vm_page,
+                                    min, offset_in_page(buf));
                 } else {
                         sg_buf = buf;
+                        sg_set_buf(&sgt->sgl[i], sg_buf, min);
                 }
 
-                sg_set_buf(&sgt->sgl[i], sg_buf, min);
 
                 buf += min;
                 len -= min;